A junior mechanical engineering student expresses concern over receiving C grades in engineering classes and questions their capability to succeed in the field. They report feeling a loss of confidence and difficulty concentrating due to a heavy course load of 19 units, which they now recognize as too much. The discussion highlights the importance of managing course loads and suggests that students should focus on understanding the material rather than solely on grades. It is noted that grades do not always reflect a student's intelligence or understanding, and some students may excel in other subjects while struggling in their major. The student acknowledges past challenges, including illness and a difficult professor, but is determined to improve their GPA and graduate without pursuing further education. The conversation emphasizes the need for self-reflection on workload, study habits, and the potential benefits of seeking academic support.